Stack Exchange

Kristoffer Arnsfelt Hansen

Århus, Denmark

http://www.cs.au.dk/~arnsfelt

Researcher in Computer Science

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Top Questions
Top Answers
194
Why is \[ ... \] preferable to $$ ... $$?
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31
What is the meaning of $O(m+n)$?
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22
Can we count in depth $\frac{\lg n}{\lg \lg n}$?
cstheory.stackexchange.com

22
How much time to recognize palindromes in logarithmic space?
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21
Guidelines to reduce general TSP to Triangle TSP
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20
Is qsort linear when sorting only two values?
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18
Better lower bounds than 3n for non-boolean functions?
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16
Graphing sine function in MetaPost
tex.stackexchange.com

16
A fixed-depth characterization of $TC^0$? $NC^1$?
cstheory.stackexchange.com

16
Relationship between SPACE(n) and E
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15
Does the $\mathsf{TC^0}$ hierarchy collapse?
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13
What is the complexity class most closely associated with what the human mind can accomplish quickly?
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13
Does L have a definition in terms of circuits?
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13
Hamiltonian cycle on graphs without small cycles
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12
Parity and $AC^0$
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11
Is it possible to use random restrictions to obtain a lower-bound for $\mathsf{TC^0}$?
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9
Circuit complexity of Majority function
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9
Depth-2 circuits with OR and MOD gates are not universal?
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8
Parallel algorithms for directed st-connectivity
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8
What is $DTIME(n^a)^{DTIME(n^b)}$?
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8
Equivalence of feasibility checking and optimization for linear systems
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7
"Steve's class": origin of SC
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7
Is the Balanced Boolean Formula problem solvable in sublogarithmic space if the input has a tree structure?
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7
Simple reduction to unbounded knapsack?
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7
Constant Depth Circuit Computing Threshold Function
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7
Topological sort with constraints on the relative difference between the vertex labels
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6
Simple question about pseudorandom generator
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6
Solving Linear Equations over $Z_q$
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6
Subgraph containing all nodes and edges that are part of length-limited simple s-t paths in a digraph
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6
Gap in degree of representations of candidate boolean functions
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